The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Cet article présente les performances du taux d'erreur de bloc moyen (BLER) des schémas circulaires 32QAM et 64QAM employant un égaliseur dans le domaine fréquentiel (FDE) pour le multiplexage par répartition orthogonale de la fréquence (OFDM) précodé par transformée de Fourier discrète (DFT) dans les canaux à évanouissements de Rayleigh à trajets multiples. Le schéma QAM circulaire présente une caractéristique avantageuse en ce sens que la fluctuation de la composante d'amplitude est plus petite que celle du schéma QAM croisé ou rectangulaire. Par conséquent, en nous concentrant sur le rapport signal/bruit (SNR) réel reçu en tenant compte d'une mesure réaliste du rapport puissance crête/moyenne (PAPR) appelée métrique cubique (CM), nous comparons le BLER moyen du 32QAM circulaire. et 64QAM avec ceux des schémas croisés 32QAM et rectangulaires 64QAM, respectivement. Nous étudions le débit théorique de divers schémas circulaires 32QAM et 64QAM basés sur des informations mutuelles du point de vue de la distance euclidienne minimale. Les résultats de simulation au niveau de la liaison montrent que les schémas circulaires 32QAM et 64QAM avec mappage de bits indépendant pour les modulations de phase et d'amplitude permettent d'obtenir un SNR reçu moyen requis inférieur en tenant compte du CM que celui avec la distance euclidienne minimale mais avec un mappage composite des modulations de phase et d'amplitude. . Grâce à des simulations approfondies au niveau des liaisons, nous montrons l'avantage potentiel des schémas circulaires 32QAM et 64QAM en termes de réduction du SNR reçu moyen requis en considérant le CM qui satisfait le BLER moyen cible par rapport au schéma croisé 32QAM ou rectangulaire 64QAM.
Chihiro MORI
Tokyo City University
Miyu NAKABAYASHI
Tokyo City University
Mamoru SAWAHASHI
Tokyo City University
Teruo KAWAMURA
NTT DOCOMO INC.
Nobuhiko MIKI
Kagawa University
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Chihiro MORI, Miyu NAKABAYASHI, Mamoru SAWAHASHI, Teruo KAWAMURA, Nobuhiko MIKI, "Performance of Circular 32QAM/64QAM Schemes Using Frequency Domain Equalizer for DFT-Precoded OFDM" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 9, pp. 1054-1066, September 2021, doi: 10.1587/transcom.2020FGP0008.
Abstract: This paper presents the average block error rate (BLER) performance of circular 32QAM and 64QAM schemes employing a frequency domain equalizer (FDE) for discrete Fourier transform (DFT)-precoded orthogonal frequency division multiplexing (OFDM) in multipath Rayleigh fading channels. The circular QAM scheme has an advantageous feature in that the fluctuation in the amplitude component is smaller than that for the cross or rectangular QAM scheme. Hence, focusing on the actual received signal-to-noise power ratio (SNR) taking into account a realistic peak-to-average power ratio (PAPR) measure called the cubic metric (CM), we compare the average BLER of the circular 32QAM and 64QAM schemes with those of cross 32QAM and rectangular 64QAM schemes, respectively. We investigate the theoretical throughput of various circular 32QAM and 64QAM schemes based on mutual information from the viewpoint of the minimum Euclidean distance. Link-level simulation results show that the circular 32QAM and 64QAM schemes with independent bit mapping for the phase and amplitude modulations achieves a lower required average received SNR considering the CM than that with the minimum Euclidean distance but with composite mapping of the phase and amplitude modulations. Through extensive link-level simulations, we show the potential benefit of the circular 32QAM and 64QAM schemes in terms of reducing the required average received SNR considering the CM that satisfies the target average BLER compared to the cross 32QAM or rectangular 64QAM scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020FGP0008/_p
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@ARTICLE{e104-b_9_1054,
author={Chihiro MORI, Miyu NAKABAYASHI, Mamoru SAWAHASHI, Teruo KAWAMURA, Nobuhiko MIKI, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance of Circular 32QAM/64QAM Schemes Using Frequency Domain Equalizer for DFT-Precoded OFDM},
year={2021},
volume={E104-B},
number={9},
pages={1054-1066},
abstract={This paper presents the average block error rate (BLER) performance of circular 32QAM and 64QAM schemes employing a frequency domain equalizer (FDE) for discrete Fourier transform (DFT)-precoded orthogonal frequency division multiplexing (OFDM) in multipath Rayleigh fading channels. The circular QAM scheme has an advantageous feature in that the fluctuation in the amplitude component is smaller than that for the cross or rectangular QAM scheme. Hence, focusing on the actual received signal-to-noise power ratio (SNR) taking into account a realistic peak-to-average power ratio (PAPR) measure called the cubic metric (CM), we compare the average BLER of the circular 32QAM and 64QAM schemes with those of cross 32QAM and rectangular 64QAM schemes, respectively. We investigate the theoretical throughput of various circular 32QAM and 64QAM schemes based on mutual information from the viewpoint of the minimum Euclidean distance. Link-level simulation results show that the circular 32QAM and 64QAM schemes with independent bit mapping for the phase and amplitude modulations achieves a lower required average received SNR considering the CM than that with the minimum Euclidean distance but with composite mapping of the phase and amplitude modulations. Through extensive link-level simulations, we show the potential benefit of the circular 32QAM and 64QAM schemes in terms of reducing the required average received SNR considering the CM that satisfies the target average BLER compared to the cross 32QAM or rectangular 64QAM scheme.},
keywords={},
doi={10.1587/transcom.2020FGP0008},
ISSN={1745-1345},
month={September},}
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TY - JOUR
TI - Performance of Circular 32QAM/64QAM Schemes Using Frequency Domain Equalizer for DFT-Precoded OFDM
T2 - IEICE TRANSACTIONS on Communications
SP - 1054
EP - 1066
AU - Chihiro MORI
AU - Miyu NAKABAYASHI
AU - Mamoru SAWAHASHI
AU - Teruo KAWAMURA
AU - Nobuhiko MIKI
PY - 2021
DO - 10.1587/transcom.2020FGP0008
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2021
AB - This paper presents the average block error rate (BLER) performance of circular 32QAM and 64QAM schemes employing a frequency domain equalizer (FDE) for discrete Fourier transform (DFT)-precoded orthogonal frequency division multiplexing (OFDM) in multipath Rayleigh fading channels. The circular QAM scheme has an advantageous feature in that the fluctuation in the amplitude component is smaller than that for the cross or rectangular QAM scheme. Hence, focusing on the actual received signal-to-noise power ratio (SNR) taking into account a realistic peak-to-average power ratio (PAPR) measure called the cubic metric (CM), we compare the average BLER of the circular 32QAM and 64QAM schemes with those of cross 32QAM and rectangular 64QAM schemes, respectively. We investigate the theoretical throughput of various circular 32QAM and 64QAM schemes based on mutual information from the viewpoint of the minimum Euclidean distance. Link-level simulation results show that the circular 32QAM and 64QAM schemes with independent bit mapping for the phase and amplitude modulations achieves a lower required average received SNR considering the CM than that with the minimum Euclidean distance but with composite mapping of the phase and amplitude modulations. Through extensive link-level simulations, we show the potential benefit of the circular 32QAM and 64QAM schemes in terms of reducing the required average received SNR considering the CM that satisfies the target average BLER compared to the cross 32QAM or rectangular 64QAM scheme.
ER -